@import url('https://fonts.googleapis.com/css2?family=Sora:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700&display=swap');

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #050816;
  --bg-secondary: #0B1120;
  --bg-tertiary: #111827;
  --bg-card: #111827;
  --bg-card-hover: #1A2236;
  --bg-elevated: #1E293B;

  --accent: #2563EB;
  --accent-light: #3B82F6;
  --accent-lighter: #60A5FA;
  --accent-purple: #6366F1;
  --accent-green: #10B981;
  --accent-warm: #F59E0B;

  --gradient-primary: linear-gradient(135deg, #2563EB, #6366F1);
  --gradient-hero: linear-gradient(135deg, #2563EB 0%, #6366F1 50%, #8B5CF6 100%);
  --gradient-warm: linear-gradient(135deg, #F59E0B, #EF4444);
  --gradient-green: linear-gradient(135deg, #10B981, #059669);

  --text-primary: #F1F5F9;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-inverse: #0F172A;

  --border: #1E293B;
  --border-light: #334155;

  --glass-bg: rgba(17, 24, 39, 0.6);
  --glass-border: rgba(255, 255, 255, 0.05);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);

  --glow-blue: rgba(37, 99, 235, 0.15);
  --glow-purple: rgba(99, 102, 241, 0.15);
  --glow-blue-strong: rgba(37, 99, 235, 0.25);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(37, 99, 235, 0.15);

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  --font-heading: 'Sora', sans-serif;
  --font-body: 'Inter', sans-serif;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 28px;
  --radius-full: 9999px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-theme: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  --container-max: 1200px;
  --container-padding: clamp(1rem, 5vw, 2rem);

  --header-height: 72px;
}

[data-theme="light"] {
  --bg-primary: #F8FAFC;
  --bg-secondary: #E2E8F0;
  --bg-tertiary: #FFFFFF;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F1F5F9;
  --bg-elevated: #FFFFFF;

  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --text-inverse: #F1F5F9;

  --border: #CBD5E1;
  --border-light: #E2E8F0;

  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(0, 0, 0, 0.05);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);

  --glow-blue: rgba(37, 99, 235, 0.08);
  --glow-purple: rgba(99, 102, 241, 0.08);
  --glow-blue-strong: rgba(37, 99, 235, 0.15);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 30px rgba(37, 99, 235, 0.1);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color var(--transition-theme), color var(--transition-theme);
  overflow-x: hidden;
}

::selection {
  background: var(--accent);
  color: white;
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-light);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  font-weight: 600;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--space-4xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-light);
  margin-bottom: var(--space-md);
  padding: 0.4rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
}

.section-title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-lg);
}

.section-title .gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: rgba(37, 99, 235, 0.2);
}

.glow {
  box-shadow: 0 0 30px var(--glow-blue);
}

.glow-purple {
  box-shadow: 0 0 30px var(--glow-purple);
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-scale {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-scale.visible {
  opacity: 1;
  transform: scale(1);
}

.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--container-padding);
  transition: background var(--transition-theme), border-color var(--transition-theme);
}

header .logo {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

header .logo span {
  font-weight: 300;
  -webkit-text-fill-color: var(--text-secondary);
  color: var(--text-secondary);
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  color: var(--text-secondary);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.theme-toggle:hover {
  color: var(--text-primary);
  border-color: var(--border-light);
}

.mesh-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.mesh-bg .orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: floatOrb 20s ease-in-out infinite;
}

.mesh-bg .orb:nth-child(1) {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.15), transparent 70%);
  top: -10%;
  right: -10%;
  animation-delay: 0s;
  animation-duration: 25s;
}

.mesh-bg .orb:nth-child(2) {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.12), transparent 70%);
  bottom: -10%;
  left: -5%;
  animation-delay: -7s;
  animation-duration: 20s;
}

.mesh-bg .orb:nth-child(3) {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.08), transparent 70%);
  top: 40%;
  left: 50%;
  animation-delay: -14s;
  animation-duration: 30s;
}

@keyframes floatOrb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(50px, -80px) scale(1.1); }
  50% { transform: translate(-30px, 60px) scale(0.9); }
  75% { transform: translate(40px, 40px) scale(1.05); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 20px var(--glow-blue); }
  50% { box-shadow: 0 0 40px var(--glow-blue-strong); }
}

@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

.shimmer-text {
  background: linear-gradient(90deg, var(--text-primary) 0%, var(--accent-light) 50%, var(--text-primary) 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 4s linear infinite;
}

.page-heading {
  padding: calc(var(--header-height) + var(--space-4xl)) 0 var(--space-2xl);
}

.page-heading-badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-light);
  padding: 0.35rem 0.9rem;
  border: 1px solid rgba(37, 99, 235, 0.2);
  border-radius: var(--radius-full);
  background: rgba(37, 99, 235, 0.06);
  margin-bottom: var(--space-lg);
}

.page-heading-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

.page-heading-text {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 620px;
}

.cta-section {
  padding-bottom: var(--space-4xl);
}

.cta-box {
  padding: var(--space-3xl) var(--space-2xl);
  text-align: center;
}

.cta-title {
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.cta-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: var(--space-lg);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 768px) {
  .page-heading {
    padding: calc(var(--header-height) + var(--space-2xl)) 0 var(--space-xl);
  }

  .cta-box {
    padding: var(--space-2xl) var(--space-lg);
  }

  :root {
    --header-height: 64px;
  }
}